iPhone video production

Here’s an example:

You may notice: (there’s an App for that!)

This was filmed on a windy day – yet there’s very little wind noise from the microphone.
Sound level is not variable between shots, not faint, not overshadowed by background noise
This was hand-held (no tripod) – yet it’s not your typical shaky phone video
Exposure and focus don’t shift during the shots – even through changing views
There are a variety of shots and professional animated subtitles. All editing done on iPhone.